A young girl slides down a rope. As she slides faster and fastershe tightens her grip, increasing the force exerted on her by therope. What happens when this force is equal in magnitude to herweight? Explain.

Q: Why does a child in a wagon seem to fall back when you give the wagon a sharp pull forward? Explain…

A: The law of inertia is another name for Newton's first law of motion. Unless a net external force is…

Q: if you push a box across the floor its "physics works" but if you push on the wall its not. which of…

A: physics work in both cases weather you push a box or wall explanation: when you apply force on box…

Q: The 915-kg motorized unit A is designed to raise and lower the 670-kg bucket B of concrete.…

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Q: 11- If the weight of the block is 50N at the elevator, what will be the new weight when it is moved…

A: The weight of block = 50 N. So, mass of block = 50/9.8= 5.1 Kg.

Q: When a car stops suddenly, the passengers tend to move forward relative to their seats. Why? When a…

A: When the car stops suddenly, the inertia of motion changes to inertia of rest and then the…

Q: A sign hangs from two wires. The left-hand wire makes an angle of 60 degrees with the horizontal,…

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Q: (I) Suppose you are standing on a train accelerating at 0.20 g. What minimum coefficient of static…

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Q: When you push against a wall with your fingers, they bend because they experience a force. Identify…

A: Pushing against a wall means applying a force of an arbitrary magnitude F1 on the wall.When fingers…

Q: Walking without slipping requires a static friction force between your feet (or footwear) and the…

A: When we walk without slipping, one of our foot pushes the floor. According to Newton’s 3rd law, the…

Q: What is the furthest you can move the car by pulling on it with this rope for 4.0 s?

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Q: A woman resting on ice, with mass 50.3 kg was pulled by a man with force F at 35 degrees above…

A: According to the equation of motion, the acceleration of the object is,…

Q: Give an example when a single force cannot replace two forces acting on a body?

A: A single force can only be able to replace two forces if they are intersecting. If two forces that…

Q: A person of weight 490 N stands on a scale in an elevator. What will the scale be reading? when the…

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Q: 4-26 Determine tensionT for pulley system. Show FBD. I Fy= 0 5T= 200 T= 40/b 2001b

A: Given: The weight of the object is 200 lb. The free-body diagram is given below.

Q: When we walk, we pull on the ground with friction. Why does this move us forward

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Q: A 32.0 kg hiker's backpack is suspended by a single rope between two trees so that the pack is in…

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Q: Mass of body is constant, but its weight is different at different places.Why?

A: Weight is given by,

Q: *94. A 5.00-kg block is placed on top of a 12.0-kg block that rests on a frictionless table. The…

A: The frictional force can be given as, Ff=μFNFf=μmg The acceleration can be given as a=μsg

Q: **94. A 5.00-kg block is placed on top of a 12.0-kg block that rests on a frictionless table. The…

A:

Q: 15 - If the weight of the block is 50N at the elevator, what will be the new weight when it is moved…

A: Given : W=50N, a=3m/s2

Q: A 165 N bird feeder is supported by three cables(T, T; and T), of which T, and T; are making angles…

A: Write the given values of this problem. T3=165 Nθ1=54°θ2=33°

Q: The Top Thrill Dragster stratacoaster at Cedar Point Amusement Park in Ohio uses a hydraulic…

A: For the cart to move up vertically it should move against gravitational force.  Acceleration of the…

Q: An adventurous archaeologist crosses between two rock cliffs, with a raging river far below, by…

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Q: Your instructor challenges you and your friend to each pull on a pair of scales attached to the ends…

A: As the two persons pull the horizontal rope, the tension will be the same at both the ends.

Q: 8-If the net force acting on an object remains constant and the mass of the object increases, the…

A: Given that if the net force acting on an object remains constant and the mass of the object…

Q: When an object falls freely under the influence of gravity there is a net force mg exerted on it by…

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Q: A 4.00-kg block rests on a 30.0° incline as shown in the figure.  If the coefficient of static…

A: Given: Mass of block = 4 kg Inclination angle = 30 degree The coefficient of static friction between…

Q: A hawk accelerates as it glides in the air. Does the force causing the acceleration come from the…

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Q: The 42-kg crate is stationary when the force P is applied. Determine the resulting acceleration of…

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Q: The force exerted by gravity on a whole brick is greater than theforce exerted by gravity on half a…

A: Full and half brick

Q: -100 Ibs 2-3) - X 2 R +x 60 Ibs 40 Ibs 40° DIAGRAM OF FORCES AND THEIR ANGLES WITH THE HORIZONTAL…

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Q: (II) One 3.2-kg paint bucket is hanging by a massless cord from another 3.2-kg paint bucket, also…

A: Let, tension in the upper rope be T1 and the tension in the middle rope be T2. For the lower bucket,…

Q: If the padding brings her to a stop in a time of 0.490 s, what is the average force on her body due…

A: Given data   The mass, m = 60 kg The height, h = 7.80 m  The time, t = 0.490 sec   Using kinematic…

Q: Can a body be in equilibrium , even if only one external force acts on it? Explain.

A: If a body is in equilibrium, then all the forces acting on them should be balanced. It means that if…

Q: A Shopee delivery man named lan is dragging a trunk up the loading ramp of the delivery truck. The…

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Q: an adventurous archeologist crosses between two rocks cliffs, with a ranging river far below, by…

A:

Q: You’re exploring a cave. Standing in a low cavern, you steady yourself by pushing straight up on the…

A: When we stand  in a low cavern exploring a cave and steady ourselves by pushing straight up on the…

Q: Two blocks of masses 20 kg and 8 kg are connected together by a light string and rest on a…

A: Given:- m1= 8 kg = mass of block-1 m2= 20 kg = mass of block-2 a= acceleration of the system= 0.5…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!